Cream-pump.



No. 893,741. PATENTBD JULY 21, 1908.

E. LINDBLAD.

CREAM PUMP.

APPLIOAZIJION FILED FEB.29,1908.

anvcntoz ERHARD LINDBLAD, OF KOST, MINNESOTA.

ORE AM-PUMP.

, Specification of Letters Patent.

Patented July 21, 190s.

. Application filed.v February 29, 1908. Serial No. 418,589.

T 0 all whom it may concern:

Be it known that I, ERHARD LINDBLAD, a cltizen of the United States, residing at Kost, in the county of Chisago and State of Minnesota, have invented a new and useful Cream- Pump, of which the following is a specificat1on.

This invention relates to pumps and more particularly to a cream pump especially designed for transferring milk or cream from a receiving vat to a churn preparatory to converting the same into butter.

The object of the invention is to provide a strong, durable and thoroughly efficient pump of this character capable of being readily attached to a receiving vat, and by means of which the cream in said vat may be quickly transferred to a churn without the necessity of carrying the same in pails or buckets and without danger of spilling or otherwise wasting the cream.

A further object of the invention is to provide a cream pump the cylinder and piston of which may be swung laterally to inoperative position so as to expose the pump valve and thus permit the several parts to be readily cleaned when necessary.

A still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and efliciency.

Further objects and advantages will appear in the following description, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claims.

In the accompanying drawings forming a part of this specification: Figure 1 is a side elevation of a cream pump constructed in accordance with my invention showing the same suspended from the upper edge of a cream vat. Fig. 2 is a top plan view of the same. Fig. 3 is a transverse sectional view taken on the line 33 of Fig. 1. Fig. 4 is a longitudinal sectional view partly in elevation. Fig. 5 is a detail erspective view of the pump lever detached? Similar numerals of reference indicate corresponding parts in all of the figures of the drawings.

The improved pump forming the subject matter of the present invention comprises a supporting frame preferably in the form of a bar or standard 5 having its upper end bent downwardly to produce an over-hanging bracket 6 adapted to enga e the upper edge of a cream receiving vat 7 or supporting the pump within the vat, as shown.

Secured to or formed integral with the lower end of the frame 5 is a stationary head' 8 having a shallow depression or chamber 9 formed therein and provided with an annular cylinder head are spaced ears 15 adapted. to

receive a clamping rod 16, the opposite ends of which are threaded for engagement with suitable nuts 17 by means of which the cylinder may be fastened in engagement with the lower head 8.

Extending laterally from the upper or closed portion of the bracket 6 is a threaded rod 18 which projects upwardly between a pair of spaced ears 19 similar in construction to the ears 15 for engagement with a clampin nut 20, thereby to assist in retaining the cylinder in engagement with the lowerhead 8. Depending from the bottom of the lower head 8 and communicating with the chamber 9 is a threaded nipple 21 which latter is coupled with an intake pipe 22 through the medium of a collar 23, the lower end of the pipe 22 being extended downwardly within the vat and immersed in the cream. The upper 'end of the nipple 21 is bent laterally within the chamber 9 to form a flange 24 constituting a seat for a valve 25, the latter being pivoted at 26 to a loop or yoke 27 arranged within the chamber 9.

Extending laterally from the head 7 and preferably formed integral therewith is an enlargement 28 having a vertical collar or flange 29 for engagement with a discharge pipe 30, there being an elbow 31 on the upper end of the pipe 30 and to which may be connected a tube or pipe for conducting the cream in the vat to the churn. The enlargement 28 is formed with a passage 32 which communicates with the chamber 9 so as to ermit the cream in the chamber 9 to be forced upwardly through the pipe 30 when the piston 14 is operated, there being a valve 33 pivoted within the flange 29 for control ling the flow of cream through the pipe 30.

Secured t0 the frame or standard 5 is an over-hanging arm 34ito which'is pivotally downward movement of the connected at 35 one end of the link 36, the opposite end of the link being pivoted at 37 to an operating lever 38. The inner end of the lever 38 over-hangs the cylinder 11 and is pivotally connected at 40 with the adjacent end of the piston rod 41.. The opposite end of the operating lever is formed with a socket 42 for the reception of the removable handle 43, there being a perforated lug 44 depending from an intermediate portion of the lever 38 so that the same may be con nected with a motor, engine or other suitable source of power, when desired. The rod 41 passes through a guide or keeper 45 carried by the free end of a plate 46, pivoted at 47, to the over-hanging arm 34. The plate 46 is provided with an elongated slot 48 through which passes a threaded pin 49, there being a nut 50 engaging the threads on the pin and bearing against the plate 46 for normally holding the same rigidly combined with the over-hanging arm 34.

In operation the lever 38 is operated either by manually mani ulating the handle 43 or by connecting the ever 38 to a motor or other suitable source of power in the man ner before stated. On the upward movement of the piston 14 the cream in the vat 7 is drawn upwardly through the pipe 22 within the chamber 9, the valve 25 being opened by the impact of the fluid. On the iston 14 the valve 25 will be moved to c osed position and the valve 33 moved to open position so that the cream in the chamber 19 will be forced through the passage 32 and pipe 33 to the elbow 3]. and thence through a suitable conductor to the churn. When it is desired to clean the pump the nut 50 is adjusted vertically on the rod 49 and the nut 20 and clamping rod 16 removed, after which the cylinder 11 together with the piston 14 are moved laterally to the position shown in Fig. 1 of the drawings and in which position the cylinder may be effectually removed from engagement with the iston so as to expose the valve 25 and t us. permit the several parts to be thoroughly cleaned. The pi e 30 may also be disconnected from the co ar 29 so as to expose the valve 33. It will here be noted that by forming the slot 48 in the plate 46, the latter may be swung upwardly to the dotted line position shown in Fig. 1 of the drawings so as to permit the piston rod and cylinder to be moved to inoperative position, the link 36 permitting downward movement of the lever 38 during the shifting operation. A suitable gasket 51 is preferably disposed on the lower head 8 in spaced relation to the flange 10 in order to prevent leakage when the pump is in operation.

From the foregoing description, it is thought that the construction and operation of the device will be readily understood by those skilled in the art and further description thereof is deemed unnecessary.

Having thus described the invention what is claimed is:

1. A pump including a supportingframe, a cylinder mounted on the frame and provided with inlet and discharge ports, a piston operated within the cylinder, a valve disposed at the inlet port, an operating lever pivotally mounted on the frame and pivotally connected with the piston, and a pivotal connection between the supporting frame and piston.

2. A pump having a cylinder and provided with inlet and discharge ports, a piston oper ating within the cylinder, a valve disposed at the inlet port, a supporting frame, an operating lever pivotally connected with the frame and piston, respectively, and means independent of the lever and forming a pivotal connection between the frame and piston.

3. A pump having a cylinder and provided with inlet and discharge ports, a piston operating within the cylinder, a valve disposed at the inlet port, a valve arranged at the discharge port, a pipe communicating with the discharge port, a supporting frame, an operating lever pivotally mounted on the frame and pivotally connected with the piston, and a connection between the supporting frame and piston thereby to permit .the cylinder and piston to be moved laterally to expose the inlet port.

4. A pump having a cylinder and provided with inlet and discharge ports, a bracket for suspending the pump from a support, a piston operating within the cylinder, a valve disposed at the inlet port, a valve arranged at the discharge port, a pipe communicating with the discharge port, an arm pivotally mounted on the bracket and engaging the piston, means for locking the arm in engagement with the bracket, and an operating lever for shifting the cylinder and piston laterally to inoperative position when the looking means is released.

5. A pump having relatively stationary and movable heads, an inlet pipe communieating with the stationary head, a valve disposed at the inlet pipe, a cylinder secured to the movable head and engaging the stationary head, a discharge pipe, a port for controlling the fluid to the discharge pipe, a piston operating within the cylinder, a supporting frame, an arm pivotally mounted on the frame and engaging the piston, means for locking the arm in engagement with the frame, and an operating lever pivotally connected with the frame and piston, respectively, for shifting the cylinder and piston laterally to inoperative position when the locking means is released.

6. A pump including a frame having a stationary head secured thereto and provided with an inlet port, a valve disposed at said port, a cylinder engaging the stationary head and provided with a terminal head movable with the cylinder, a discharge pipe, a valve for controlling the flow of fluid through the discharge pipe, a piston 0 erating within the cylinder, an arm pivotal y mounted on the frame and engaging the piston, means for locking the arm in engagement with the frame, and an operating lever for moving the cylinder and piston laterally to inoperative position when the locking means is released.

7. A pump including a frame having a stationary head secured thereto and provided with a chamber, an enlargement extending laterally from said head and provided with a passage communicating with the chamber, a discharge pipe communicating with the assage, a valve for controlling the flow of uid through the discharge pipe, an inlet pipe communicating with the chamber, a valve disposed at said inlet pipe, a cylinder engaging the head, a piston o erating within the.

cylinder, an arm pivotal y mounted on the frame and engaging the piston, means for locking the arm in engagement with the frame, an operating lever for shifting the cylinderand piston laterally, and means for inking the cylinder in engagement with said ead.

8. A pump having a cylinder and provided with inlet and discharge ports, a supporting frame having an arm. projecting over the cylinder, a plate pivoted to the arm and provided with a guide, a piston operating within the cylinder and slidably mounted in the guide, an operating lever pivotally connected with the upper end of the. piston, and a link connection between the over-hanging arm and said lever.

9. A pump including a supporting frame and having a cylinder provided with inlet and discharge ports, a piston operating within the cylinder, a plate pivotally mounted on the frame and provided with a guide, a piston rod slidably mounted within the guide, an operating lever pivotally connected with the upper end of the piston rod, and a link connection between the operating lever and sup porting frame.

10. A pump having a cylinder and provided with inlet and discharge ports, a supporting frame having an attaching bracket and provided with an over-hanging arm, a

slotted plate pivotally connected to the arm and provided with a guide, a piston operating Within the cylinder, a rod secured to the piston and slidably mounted within the guide, an operating lever pivotally connected with the upper end of the piston, a link connection between the operating lever and over-hanging arm, and means for normally locking the slotted plate in engagement with said arm.

11. A'pump having a cylinder and provided with inlet and discharge ports, a sup porting frame having an arm extending over the cylinder, a plate pivotally mounted on the arm and provided with a guide, there being a slot formed in the intermediate portion of the plate, a piston operating within thecylinder, a rod secured to the piston and slidably mounted in the guide, an operating lever pivotally connected with the upper end of the piston, a link connection between the arm and intermediate portion of the operating lever, a threaded bolt secured to the arm and extending through the slot in the plate, and a nut engaging the threads on the pin for normally clamping the plate in engagement with said arm.

12. A pump having a cylinder and provided with inlet and discharge ports, a supporting frame having an arm over-hanging the cylinder, a slotted plate pivotally connected with the arm and provided with a guide, a piston, a rod secured to the piston and slidably mounted in the guide, an operating lever having one end thereof pivotally connected with the upper end of the rod and its opposite end formed with a socket for the reception of a handle, there being a perforated lug projecting laterally from the operating lever, a link connection between the over-hanging arm and operating lever, and a clamping device secured to the arm and extending through the slot in the pivoted plate for normally clamping the latter in engagement with the arm.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

A. W. HERREID, O. A. CHAsE. 

